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Celestine or celestite〔Nickel, Ernie.; Nichols, Monte. (Mineral Names, Redefinitions & Discreditations Passed by the CNMMN of the IMA ), Materials Data, 2004, p. 26. Celestine is the approved name for this mineral by the International Mineralogical Association Commission on New Minerals and Mineral Names (CNMMN). Although ''celestite'' finds frequent usage in some mineralogical texts, the name has been discredited as a valid mineral name by this organization.〕 (SrSO4) is a mineral consisting of strontium sulfate. The mineral is named for its occasional delicate blue color. Celestine is the principal source of the element strontium, commonly used in fireworks and in various metal alloys. ==Occurrence== Celestine occurs as crystals, and also in compact massive and fibrous forms. It is mostly found in sedimentary rocks, often associated with the minerals gypsum, anhydrite, and halite. The mineral is found worldwide, usually in small quantities. Pale blue crystal specimens are found in Madagascar. The skeletons of the protozoan ''Acantharea'' are made of celestine, unlike those of other radiolarians which are made of silica. In carbonate marine sediments, burial dissolution is a recognised mechanism of celestine precipitation. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Celestine (mineral)」の詳細全文を読む スポンサード リンク
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